20510253

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13327}}^1$

素因数の和:13358

約数の個数: 20

約数和(自身を含む): 32253760

約数和(自身を除く): 11743507

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13327, 39981, 119943, 253213, 359829, 759639, 1079487, 2278917, 6836751, 20510253]

約数ペア:

[(1, 20510253), (3, 6836751), (9, 2278917), (19, 1079487), (27, 759639), (57, 359829), (81, 253213), (171, 119943), (513, 39981), (1539, 13327)]